XML Creation On the Fly - Java Source Code

In my earlier article, I have shown you how to create the XML file using java APIs. Here I will show you how to do the same however without actually creating files. Here I will use the String buffer to hold the XML content that can be used to do further processing if needed.

 @Credit: Sumeet Chakraborty

Java API being used here is same as one earlier.

Another API being used:

http://download.oracle.com/javase/6/docs/api/java/io/StringWriter.html

import java.io.StringWriter;

import javax.xml.parsers.DocumentBuilder;

import javax.xml.parsers.DocumentBuilderFactory;

import javax.xml.parsers.ParserConfigurationException;

import javax.xml.transform.Transformer;

import javax.xml.transform.TransformerException;

import javax.xml.transform.TransformerFactory;

import javax.xml.transform.dom.DOMSource;

import javax.xml.transform.stream.StreamResult;

import org.w3c.dom.Document;

import org.w3c.dom.Element;

public class XMLCreation {

      public static void main(String args[]) {

            XMLCreation xmlCreate = new XMLCreation();

            xmlCreate.createXML();

      }

      private void createXML() {

            String customerName = "Ramesh";

            String customerAddress = "Delhi";

            DocumentBuilder domBuilder = null;

            try {

                  DocumentBuilderFactory domFactory = DocumentBuilderFactory

                              .newInstance();

                  domBuilder = domFactory.newDocumentBuilder();

            } catch (ParserConfigurationException pcEx) {

                  System.out

                              .println("ParserConfiguration  "

                                          + pcEx.getMessage());

            } catch (Exception e) {

                  System.out

                              .println("Exception Occured"

                                          + e.getMessage());

            }

            Document newDoc = domBuilder.newDocument();

            // Root element

            Element rootElement = newDoc.createElement("CustomerInformation");

            newDoc.appendChild(rootElement);

            // Creating element containing value Name

            Element curElement = newDoc.createElement("Name");

            curElement.appendChild(newDoc.createTextNode(customerName));

            rootElement.appendChild(curElement);

            // Creating element signifies address

            Element keyElement = newDoc.createElement("Address");

            keyElement.appendChild(newDoc.createTextNode(customerAddress));

            rootElement.appendChild(keyElement);

            DOMSource sourceInt = new DOMSource(newDoc);

           

            //This will hold the XML content being built later on

//This is the difference where we are not creating file

//Instead, we are using StringWriter to hold the XML content

            StringWriter stew = new StringWriter();

            // File stew = new File("C:/sampleXMLfile.xml");

            StreamResult resultInt = new StreamResult(stew);

            TransformerFactory tFactoryInt = TransformerFactory.newInstance();

            Transformer transformerInt = null;

            try {

                  transformerInt = tFactoryInt.newTransformer();

                 

                  //this is where actually transformation happens and creates the XML

                 

                  transformerInt.transform(sourceInt, resultInt);

                  System.out.println("XML created as " + stew.getBuffer().toString());

            } catch (TransformerException tEx) {

                  System.out

                              .println("TransformerException Occured  "

                                          + tEx.getMessage());

            } catch (Exception e) {

                  System.out

                              .println("Exception Occured                                           + e.getMessage());

            }

      }

}